Implemented history writer

2026-06-14 14:09:51 +02:00
parent f25bd7f08e
commit dd7dd22cb0
27 changed files with 1537 additions and 104 deletions
@@ -161,6 +161,10 @@ std::string BuildSetTrigger(const std::string& signalKey, const std::string& edg
 /** signalsCsv: comma-separated full keys "src:sig,src:sig2"; n<=0 → raw. */
 std::string BuildZoom(uint32_t reqId, double t0, double t1, int n,
                       const std::string& signalsCsv);
+/** History zoom: same shape as zoom but reads from disk history. */
+std::string BuildHistoryZoom(uint32_t reqId, double t0, double t1, int n,
+                              const std::string& signalsCsv);
+std::string BuildHistoryInfo();
 std::string BuildSetMaxPoints(uint32_t n);

 /*---------------------------------------------------------------------------*/
@@ -187,6 +191,22 @@ bool ParseTriggerState(const std::string& json, TriggerStateMsg& out);
 /** @brief Parse a "zoom" response. */
 bool ParseZoom(const std::string& json, ZoomResponse& out);

+/** @brief Parse a "historyInfo" event. */
+struct HistorySignalRange {
+    std::string key;
+    double t0 = 0.0, t1 = 0.0;
+    uint32_t count = 0, capacity = 0;
+};
+
+struct HistoryInfoMsg {
+    bool     enabled       = false;
+    double   durationHours = 0.0;
+    uint32_t decimation    = 0;
+    std::vector<HistorySignalRange> signals;
+};
+
+bool ParseHistoryInfo(const std::string& json, HistoryInfoMsg& out);
+
 /** @brief Parse a "maxPointsUpdated" event. */
 bool ParseMaxPointsUpdated(const std::string& json, uint32_t& maxPoints);